From the pictures and description given, there are not enough details as to why the truck tipped over. I can see the trailer is going one direction, the tanker the other, and the car somehow is between them traveling in the same direction as the pickup and trailer.
My question is why is the car between the pickup and tanker? Was it trying to pass the pickup when the tanker showed up, then collided with the back of the pickup? I have seen pit manauvers, and it does not take much to flip over a car, so it is possible the car caused the pickup to roll.
If the car had a proper following distance, say 100' or more behind the fifth wheel, I could not see it getting involved with this collision.
I also wonder why the tanker did not take to the ditch on the other side of the road?
So basically from the details provided, you really can not tell what happened. Hopefully the tanker truck has a on board camera, it will answer most of those questions.
Fred.
